Some components are always present in every fountain pen: the combination of the nib and the feeder (the so called ''nib group''), the section (the end of the pen that holds the nib and feeder), the body of the pen, which is or contains the ink reservoir, and the cap (absent only on so-called [[desk pens]]). | Some components are always present in every fountain pen: the combination of the nib and the feeder (the so called ''nib group''), the section (the end of the pen that holds the nib and feeder), the body of the pen, which is or contains the ink reservoir, and the cap (absent only on so-called [[desk pens]]). |